Long-propagating ghost phonon polaritons enabled by selective mode excitation for faster computing and ultra-sensitive sensors

https://www.eurekalert.org/news-releases/1094280

"ghost hyperbolic phonon polaritons propagate in ray-like paths within transparent birefringent calcite having specially shaped gold asymmetric triangular nano-antenna fabricated directly onto surface to launch waves over 80 μm (was 20)... selectively excites modes with lower losses, thereby greatly reducing energy waste... heat management in large-scale GPU clusters, guiding quantum states over long distance in quantum information systems, improved molecular sensors, anisotropic nanophotonic devices"

Related: Polaritons enable tunable and efficient molecular charge transfer across broader spectrum of light
https://phys.org/news/2025-09-polaritons-enable-tunable-efficient-molecular.html